package com.hanlin.beforejavacodesummary.utils;

import com.alibaba.fastjson.JSONObject;
import com.sgcc.dc.master.util.SkipHttpsUtil;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.web.client.RestTemplate;

import java.io.IOException;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * <b>概述</b>：<br>
 * TODO
 * <p>
 * <b>功能</b>：<br>
 * TODO
 *
 * @author:L
 */
public class HttpClientUtil {
    /**
     * 带参数的get请求
     * @param url
     * @param param
     * @return String
     */
    public static String doGet(String url, Map<String, String> param) {
        // 创建Httpclient对象
//        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpClient httpClient = (CloseableHttpClient) SkipHttpsUtil.wrapClient();
        String resultString = "";
        CloseableHttpResponse response = null;
        try {
            // 创建uri
            URIBuilder builder = new URIBuilder(url);
            if (param != null) {
                for (String key : param.keySet()) {
                    builder.addParameter(key, param.get(key));
                }
            }
            URI uri = builder.build();
            // 创建http GET请求
            HttpGet httpGet = new HttpGet(uri);
            // 执行请求
            response = httpClient.execute(httpGet);
            // 判断返回状态是否为200
            if (response.getStatusLine().getStatusCode() == 200) {
                resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (response != null) {
                    response.close();
                }
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    /**
     * 不带参数的get请求
     * @param url
     * @return String
     */
    public static String doGet(String url) {
        return doGet(url, null);
    }

    /**
     * 带参数的post请求
     * @param url
     * @param param
     * @return String
     */
    public static String doPost(String url, Map<String, String> param) {
        // 创建Httpclient对象
//        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpClient httpClient = (CloseableHttpClient) SkipHttpsUtil.wrapClient();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建参数列表
            if (param != null) {
                List<NameValuePair> paramList = new ArrayList<>();
                for (String key : param.keySet()) {
                    paramList.add(new BasicNameValuePair(key, param.get(key)));
                }
                // 模拟表单
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
                httpPost.setEntity(entity);
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    /**
     * 带参数的post请求
     * @param url
     * @param param
     * @return String
     */
    public static String doPostJson(String url, Map<String, String> param) {
        // 创建Httpclient对象
//        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpClient httpClient = (CloseableHttpClient) SkipHttpsUtil.wrapClient();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建参数列表
            if (param != null) {
                JSONObject jsonParam = new JSONObject();
                List<NameValuePair> paramList = new ArrayList<>();
                for (String key : param.keySet()) {
                    jsonParam.put(key,param.get(key));
                }
                StringEntity entity = new StringEntity(jsonParam.toString(),"utf-8");
                entity.setContentEncoding("UTF-8");
                entity.setContentType("application/json");
                httpPost.setEntity(entity);
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }
    /**
     * 不带参数的post请求
     * @param url
     * @return String
     */
    public static String doPost(String url) {
        return doPost(url, null);
    }

    /**
     * 传送json类型的post请求
     * @param url
     * @param json
     * @return String
     */
    public static String doPostJson(String url, String json) {
        // 创建Httpclient对象
//        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpClient httpClient = (CloseableHttpClient) SkipHttpsUtil.wrapClient();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }


    /**
     * 传送json类型的post请求
     * @param url
     * @param json
     * @return String
     */
    public static String doPostJsonHeader(String url, String json,Map<String, String> header) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = (CloseableHttpClient) SkipHttpsUtil.wrapClient();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            if (header != null){
                Set<String> keySet = header.keySet();
                for (String key : keySet) {
                    httpPost.addHeader(key, header.get(key));
                }
            }
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    /**
     * 带参数的post请求
     * @param url
     * @param param
     * @return String
     */
    public static String doPostJsonHead(String url, Map<String, Object> param,Map<String, String> header) {
        // 创建Httpclient对象
//        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpClient httpClient = (CloseableHttpClient) SkipHttpsUtil.wrapClient();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            if (header != null){
                Set<String> keySet = header.keySet();
                for (String key : keySet) {
                    httpPost.addHeader(key, header.get(key));
                }
            }
            // 创建参数列表
            if (param != null) {
                JSONObject jsonParam = new JSONObject();
                List<NameValuePair> paramList = new ArrayList<>();
                for (String key : param.keySet()) {
                    jsonParam.put(key,param.get(key));
                }
                StringEntity entity = new StringEntity(jsonParam.toString(),"utf-8");
                entity.setContentEncoding("UTF-8");
                entity.setContentType("application/json");

                httpPost.setEntity(entity);
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    /**
     * 带参数的get请求
     * @param url
     * @param param
     * @return String
     */
    public static String doGetHead(String url, Map<String, String> param,Map<String, String> header) {
        // 创建Httpclient对象
//        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpClient httpClient = (CloseableHttpClient) SkipHttpsUtil.wrapClient();
        String resultString = "";
        CloseableHttpResponse response = null;
        try {
            // 创建uri
            URIBuilder builder = new URIBuilder(url);
            if (param != null) {
                for (String key : param.keySet()) {
                    builder.addParameter(key, param.get(key));
                }
            }
            URI uri = builder.build();
            // 创建http GET请求
            HttpGet httpGet = new HttpGet(uri);
            if (header != null){
                Set<String> keySet = header.keySet();
                for (String key : keySet) {
                    httpGet.addHeader(key, header.get(key));
                }
            }
            // 执行请求
            response = httpClient.execute(httpGet);
            // 判断返回状态是否为200
            if (response.getStatusLine().getStatusCode() == 200) {
                resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (response != null) {
                    response.close();
                }
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    /**
     * 只有头文件
     * @param url
     * @param
     * @return String
     */
    public static String doPostRestTemplate(String url, Map<String, String> param,Map<String, String> header) {
        RestTemplate restTemplate = getRestTemplate("utf-8");
        HttpHeaders httpHeaders = new HttpHeaders();
        if (header != null){
            Set<String> keySet = header.keySet();
            for (String key : keySet) {
                httpHeaders.set(key, header.get(key));
            }
        }
        HttpEntity<String> requestEntity = null;
        //如果有body
        if (param != null) {
            JSONObject jsonParam = new JSONObject();
            List<NameValuePair> paramList = new ArrayList<>();
            for (String key : param.keySet()) {
                jsonParam.put(key, param.get(key));
            }
            requestEntity = new HttpEntity<String>(jsonParam.toJSONString(), httpHeaders);
        }else{
            requestEntity = new HttpEntity<String>(httpHeaders);
        }
        String  result = restTemplate.exchange(url, HttpMethod.POST, requestEntity, String.class).getBody();

        return result;
    }
    public static RestTemplate getRestTemplate(String charset) {
        RestTemplate restTemplate = new RestTemplate();
        restTemplate.getMessageConverters().add(new StringHttpMessageConverter(Charset.forName(charset)));
        return restTemplate;
    }

}
